hotspot/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/KillingBeginNode.java

/*
 * Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
package org.graalvm.compiler.nodes;

import static org.graalvm.compiler.nodeinfo.InputType.Memory;
import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_0;
import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_0;

import org.graalvm.compiler.core.common.LocationIdentity;
import org.graalvm.compiler.graph.NodeClass;
import org.graalvm.compiler.nodeinfo.NodeInfo;
import org.graalvm.compiler.nodes.memory.MemoryCheckpoint;

@NodeInfo(allowedUsageTypes = {Memory}, cycles = CYCLES_0, size = SIZE_0)
public final class KillingBeginNode extends AbstractBeginNode implements MemoryCheckpoint.Single {

    public static final NodeClass<KillingBeginNode> TYPE = NodeClass.create(KillingBeginNode.class);
    protected LocationIdentity locationIdentity;

    public KillingBeginNode(LocationIdentity locationIdentity) {
        super(TYPE);
        this.locationIdentity = locationIdentity;
    }

    public static KillingBeginNode begin(FixedNode with, LocationIdentity locationIdentity) {
        if (with instanceof KillingBeginNode) {
            return (KillingBeginNode) with;
        }
        KillingBeginNode begin = with.graph().add(new KillingBeginNode(locationIdentity));
        begin.setNext(with);
        return begin;
    }

    @Override
    public LocationIdentity getLocationIdentity() {
        return locationIdentity;
    }
}